Dad sees me start to cook, comes in to the small kitchen, notices a task he can do, and gets in my way. My deterrents don't work. Ideas? He has mild cognitive impairment. He's wonderful, helpful, bored, and in my way. I need him out of my way as I have a bad knee and it already hurts just to be standing and walking. To work around him is too hard on my knee. The kitchen is very small, but there's a chair by the window and it overlooks the ocean. That goes ok sometimes, but I need new ideas please.